Q24.8 Other specified congenital malformations of heart

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applicable to

• Congenital diverticulum of left ventricle
• Congenital malformation of myocardium
• Congenital malformation of pericardium
• Malposition of heart
• Uhl's disease

Applies from Q24 Other congenital malformations of heart

Excludes1 (never code together)

• endocardial fibroelastosis (I42.4)

MS-DRG index

Defines the logic of DRG(s) 306-307 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 746.84 Obstructive anomalies of heart, not elsewhere classified (approximate)
• 746.87 Malposition of heart and cardiac apex (approximate)
• 746.89 Other specified congenital anomalies of heart (approximate)

Code annotations containing back-references to Q24.8

Back-references to Q24.8

• Type 2 Excludes: I08 Multiple valve diseases ("multiple valve disease specified as nonrheumatic (I34.-, I35.-, I36.-, I37.-, I38.-, Q22.-, Q23.-, Q24.8-)")
• Type 1 Excludes: I38 Endocarditis, valve unspecified ("congenital insufficiency of cardiac valve NOS (Q24.8)")
• Type 1 Excludes: I38 Endocarditis, valve unspecified ("congenital stenosis of cardiac valve NOS (Q24.8)")

Back-references to Q24

• Code Also: I27.21 Secondary pulmonary arterial hypertension ("congenital heart disease (Q20-Q28)")
• Type 2 Excludes: P29 Cardiovascular disorders originating in the perinatal period ("congenital malformations of the circulatory system (Q20-Q28)")
• Code Also: Z71.87 Encounter for pediatric-to-adult transition counseling ("congenital malformations of the circulatory system (Q20-Q28)")

Diagnosis Index entries for Q24.8

• Absence (of) (organ or part) (complete or partial) › pericardium (congenital)
• Accessory (congenital) › cusp (s), heart valve NEC
• Accessory (congenital) › heart
• Accessory (congenital) › heart › valve NEC
• Accessory (congenital) › leaflet, heart valve NEC
• Accessory (congenital) › valve, heart NEC
• Agenesis › heart
• Agenesis › heart › valve NEC
• Agenesis › pericardium
• Anomaly, anomalous (congenital) (unspecified type) › band › heart
• Anomaly, anomalous (congenital) (unspecified type) › band › ventricular
• Anomaly, anomalous (congenital) (unspecified type) › cardiac › valve NEC
• Anomaly, anomalous (congenital) (unspecified type) › chordae tendineae
• Anomaly, anomalous (congenital) (unspecified type) › heart › bands or folds
• Anomaly, anomalous (congenital) (unspecified type) › heart › valve NEC
• Anomaly, anomalous (congenital) (unspecified type) › myocardium
• Anomaly, anomalous (congenital) (unspecified type) › papillary muscles
• Anomaly, anomalous (congenital) (unspecified type) › pericardium
• Anomaly, anomalous (congenital) (unspecified type) › Uhl's (hypoplasia of myocardium, right ventricle)
• Anomaly, anomalous (congenital) (unspecified type) › valve (heart) NEC
• Anomaly, anomalous (congenital) (unspecified type) › valve (heart) NEC › inferior vena cava
• Anomaly, anomalous (congenital) (unspecified type) › valve (heart) NEC › venae cavae inferioris
• Anomaly, anomalous (congenital) (unspecified type) › ventricular › bands or folds
• Atresia, atretic › heart valve NEC
• Band (s) › anomalous or congenital › heart (atrial) (ventricular)
• Bifid (congenital) › apex, heart
• Cardiomegaly › congenital
• Cardiomyopathy (familial) (idiopathic) › hypertrophic (nonobstructive) › obstructive › congenital
• Chiari's › net
• Cordis ectopia
• Cyst (colloid) (mucous) (simple) (retention) › celomic (pericardium)
• Cyst (colloid) (mucous) (simple) (retention) › pericardial (congenital)
• Deformity › heart (congenital) › valve (congenital) NEC
• Deformity › pericardium (congenital)
• Deformity › valve, valvular (congenital) (heart)
• Development › defective, congenital › left ventricle
• Development › defective, congenital › valve
• Dilatation › cardiac (acute) (chronic) › congenital
• Dilatation › cardiac (acute) (chronic) › congenital › valve NEC
• Dilatation › heart (acute) (chronic) › congenital
• Disease, diseased › heart (organic) › congenital › specified NEC
• Disease, diseased › heart (organic) › valve, valvular (obstructive) (regurgitant) › congenital NEC
• Disease, diseased › Uhl's
• Displacement, displaced › heart (congenital)
• Distortion (s) (congenital) › heart (auricle) (ventricle)
• Distortion (s) (congenital) › heart (auricle) (ventricle) › valve (cusp)
• Diverticulum, diverticula (multiple) › heart (congenital)
• Diverticulum, diverticula (multiple) › pericardium (congenital) (cyst)
• Diverticulum, diverticula (multiple) › ventricle, left (congenital)
• Ectocardia

Nearby codes

• Q24.2 Cor triatriatum
• Q24.3 Pulmonary infundibular stenosis
• Q24.4 Congenital subaortic stenosis
• Q24.5 Malformation of coronary vessels
• Q24.6 Congenital heart block
• Q24.8 Other specified congenital malformations of heart (this code)
• Q24.9 Congenital malformation of heart, unspecified